US4082138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat regenerator
Assignee: US Philips Corp
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Filing: 1975-08-26
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Granted: 1978-04-04
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Expires: 1995-08-26
Abstract
Abstract A filling mass for low-temperature regenerators comprising one or more of the compounds of the formula A 1-x B x Rh 1-y X y , wherein A = Sm, Gd, Tb, Dy or a mixture thereof, wherein B = Ho, Er, Tm, Yb or a mixture thereof, wherein X = Cu, Zn, Ru, Pd, Ag, Re, Os, Ir, Pt, Au or a mixture thereof, and wherein 0≦×≦1 and 0≦y<0.2.
Inventors
- 👤 Andries Rinse Miedema
- 👤 Kurt Heinz Jurgen Buschow
- 👤 Jan Mulder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:55
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/012; H01F1/015; C; C22; C22C; C22C28/00; F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/044; F02G1/0445; F25; F25B; F25B9/00; F25B9/002; F25B9/004; F28; F28D; F28D17/00; F28F; F28F21/00; F02G2250/00; F02G2250/18; F25B2309/00; F25B2309/003; Y; Y02; Y02E; Y02E60/00; Y02E60/14; Y10; Y10S; Y10S165/00; Y10S165/009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
In a low-temperature regenerator comprising a filling mass of a heat accumulating material in a housing the improvement wherein the heat accumulating material has a relatively high specific heat at temperatures below 20° K and is formed of at least one compound of the formula A 1-x B x Rh 1-y X y , wherein A is at least one element selected from the group consisting of Sm, Gd, Tb and Dy, B is at least one element selected from the group consisting of Ho, Er, Tm and Yb, X is at least one element selected from the group consisting of Cu, Zn, Ru, Pd, Ag, Re, Os, Ir, Pt and Au, 0 ≦ x ≦ 1 and 0 ≦ y < 0.2.
Claim 2
Dependent Claim
123 words
In a low-temperature regenerator comprising a filling mass of a heat accumulating material in a housing the improvement wherein the heat accumulating material has a relatively high specific heat at temperatures below 20° K and is formed of at least one compound of the formula A 1-x B x Rh 1-y X y , wherein A is at least one element selected from the group consisting of Sm, Gd, Tb and Dy, B is at least one element selected from the group consisting of Ho, Er, Tm and Yb, X is at least one element selected from the group consisting of Cu, Zn, Ru, Pd, Ag, Re, Os, Ir, Pt and Au, 0 ≦ x ≦ 1 and 0 ≦ y < 0.2.
References Cited (Backward Citations)
US3216484A
Cited
US3218815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-03 | 1981-10-03 | 1982-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-03 | 1985-10-03 | 1986-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-03 | 1989-10-03 | 1990-04-04 | $7700.00 | Window Closed / Lapsed |